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Home >> Jaguar >> 2007 >> XK8 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Engine Controls >> Electronic Engine Controls (4.2L, Vehicles Without: Supercharger) >> Electronic Engine Controls - Description & Operation >> Components >> Fuel Injectors

Fuel Injectors

Fig 1: Fuel Injectors
GJ0009741Courtesy of JAGUAR CARS, INC.

The engine has 8 fuel injectors (one per cylinder), each injector is directly driven by the ECM. The injectors are fed by a common fuel rail as part of a 'returnless' fuel system. The fuel rail pressure is regulated to 4.5 bar by a fuel pressure regulator which is integral to the fuel pump module, within the fuel tank. The injectors can be checked by resistance checks. There is a fuel pressure test Schrader valve attached to the fuel rail on the front LH side for fuel pressure testing purposes. The ECM monitors the output power stages of the injector drivers for electrical faults.

The injectors have a resistance of 13.8 Ohms ± 0.7 Ohms @ 20 Degrees Celsius.

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